diff --git a/src/parser/parser.nim b/src/parser/parser.nim
index a0199a7..0ff2cf2 100644
--- a/src/parser/parser.nim
+++ b/src/parser/parser.nim
@@ -193,13 +193,14 @@ func str*(s: string): (Parser -> ParserResult) {.inline.} =
     return p
 
 proc endOfStream*(parser: Parser): ParserResult =
-  if parser.state.position == parser.state.stream.len - 1:
+  let index = parser.state.position + 1
+  if index == parser.state.stream.len:
     ok(parser)
   else:
     err(ParserError(
       kind: endOfStringErr,
       expected: &"EndOfString",
-      index: parser.state.position,
+      index: index,
       parser: parser,
     ))